eagleburgmann

 

H7N

Features

  • For stepped shafts
  • Single seal
  • Balanced
  • Super-Sinus-spring or multiple springs rotating
  • Independent of direction of rotation
  • Integrated pumping device available (H7F, H75F)
  • Variant with seat cooling available (H75G115)

Advantages

  • Universal application opportunities (standardization)
  • Efficient stock keeping due to easily interchangeable faces
  • Extended selection of materials
  • Flexibility in torque transmissions
  • Self cleaning effect
  • Short Installation length possible (G16)

Recommended applications

  • Refining technology
  • Power plant technology
  • Petrochemical industry
  • Oil and gas industry
  • Hot water applications
  • Light hydrocarbons
  • Boiler feed pumps
  • Process pumps

Operating range

Shaft diameter: d1 = 14 … 100 mm (0.55″ … 3.94″) (Single spring: d1 = max. 100 mm (3.94″)) Pressure: p1 = 80 bar (1,160 PSI) for d1 = 14 … 100 mm, p1 = 25 bar (363 PSI) for d1 = 100 … 200 mm, p1 = 16 bar (232 PSI) for d1 > 200 mm Temperature: t = -50 °C … 220 °C (-58 °F … 428 °F) Sliding velocity: vg = 20 m/s (66 ft/s) Axial movement: d1 up to 22 mm: ± 1.0 mm d1 24 up to 58 mm: ± 1.5 mm d1 from 60 mm: ± 2.0 mm

Materials

Seal face: Silicon carbide (Q1, Q2), Carbon graphite antimony impregnated (A), Aluminium oxide (V), CrMo cast steel (S) Seat G9: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1*, Q2*) Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K) Springs: CrNiMo steel (G) Metal parts: CrNiMo steel (G), Duplex (G1) * Cannot be combined with seal face made of S

Standards and approvals

  • EN 12756

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